Modeling the viscosities of alumino-silicate melts
The structurally based viscosity model for aluminosilicate melts has developed, in which the influence of melt structure on viscosity has expressed by the definitions of different types of oxygen ions: (i) bridging oxygen OSi, bonded to Si4+ ions (ii) non-bridging oxygen Oi Si, bonded to Si4+ ion and cation i from basic oxide, (iii) free oxygen Oi, bonded to i ions, (iv) bridging oxygen Oj Al, i, bonded to an Al3+ ion charge compensated by cation i; (v) non-bridging oxygen Al, Oji, bonded to the metal cation j and Al3+ ion charge compensated by cation i; (vi) oxygen OAl, bonded to an Al3+ ion which is not charge compensated. A systematic method is proposed to calculate numbers of these oxygen ions. According to the calculation results of the viscosity model, it has been found that the abilities of basic oxides decreasing viscosity follow the order: FeO>MnO>CaO>MgO, when Al2O3 is absence. The viscosities of quinary, quarternary, ternary, binary and unary systems involving MgO, CaO, FeO, MnO, Al2O3 and SiO2 components have been calculated by the present model with all the mean deviations not great than 30％. Furthermore, it indicates the better precision of the present model than that of other models for the same systems.
Viscosity model alumino-silicate melt structure base
Guo-Hua Zhang Kuo-Chih Chou
School of Metall. and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, China tate Key laboratory of Advanced Metallurgy, University of Science and Technology Beijing, Beijing 100083, China
国际会议
Ninth International Conference on Molten Slags,Fluxes and Salts(第九届国际熔渣、溶剂与熔盐学术会议 MOLTEN12)
北京
英文
1-12
2012-05-27（万方平台首次上网日期，不代表论文的发表时间）